One USB Flash drive appearing as two on Desktop

My FD (Toughdrive) has two partitions: one formatted as MS-DOS (FAT32) the other as Mac OS Standard, hence the drive appearing twice on the desktop. I assume that it was partitioned by the manufacturer. How do I get rid of one of them as formatting clearly won't work? (It's irritating as I have to eject "both" every time.)

In Disk Utility, select the HDD name (above the partition names and probably mentions the manufacturer as well) and not one of the partitions in the left white pane. In the right pane, click on 'Partition' tab. From the left drop down list select '1 Partition' instead of 'current'. From the right drop down list select the FS. Click Apply!

Thanks, tried that as per your instructions but there are still two. (They appear in the DU as two drives, and of course you can partition either.)

Click to expand...

I those you see are really two partition of the same disk then you should have an entry above the two drive you see in DU. The partitioning should be done on that entry and not on the single volume entry.
To be able to do the instruction above you had to use the partition tab, which should only appear when you select the entry corresponding to a physical disk (the one above the volumes you see in finder). If you did partition each drive it probably means you have two separate disks on the same USB flash drive and it's normal to see two icons (although it's not usual as a setup).

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